Home / 90,003.12-124,203.51-49,719.69

Finding the Fourth Proportional to 90,003.12, 124,203.51 and 49,719.69

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Solution

The fourth proportional to 90,003.12, 124,203.51 and 49,719.69 is: 68,612.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,003.12 : 124,203.51 = 49,719.69 : x
  2. Step 2: Convert to fraction form
    90,003.12/124,203.51 = 49,719.69/x
  3. Step 3: Cross multiply
    90,003.12x = 124,203.51 × 49,719.69
  4. Step 4: Simplify right side
    90,003.12x = 6,175,360,014.11
  5. Step 5: Solve for x
    x = 6,175,360,014.11/90,003.12
  6. Step 6: Final answer
    x = 68,612.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.